Higher
6th September 1973
- 1Conditional Probability3 marks
29 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Histograms2 marks
A histogram class is 4 units wide and contains 16 values. Work out the frequency density.
- 3Reverse Percentages3 marks
A bill is £384 including VAT at 20%. Work out the amount before VAT.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 3x + 11, work out y when x = 4.
- 5Repeated Percentage Change3 marks
A town's population is 34000 and grows by 3% each year. Work out the population after 2 years, to the nearest whole number.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1973, including the monthly compilation PDF.